Hi Salvatore,
This is not exactly the same case but it might help....
My "MAPFILE" has a raster layer named 'landuse':
LAYER
NAME landuse
TYPE RASTER
DATA "file01.tif"
END
and I was interested in giving the user the capability to change the
data source (i.e. switch from "file01.tif" to "file02.tif", by clicking
on a button).
To do that, I passed the filename as a variable (wdata) in the URL and
used the mapscript function "set" to update the layer in the map object:
#### globals.php ###############################
$wdata=$_REQUEST['wdata'];
if ($wdata != '') {
$mylayer=$map->getLayerByName('landuse');
$mylayer->set("data",$wdata);
}
#############################################
Maybe is not that clean but it works nicely.
Regards
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